When I asked for the reason, they said they needed someone urgently (I was serving a one-month notice, and their HR left 20 days before my joining).
They told me it was a hiring miscommunication when I went there on the joining day.
They sent me back home, called me in the evening, and said, "I will take you on my team - Admin."
Yesterday, I went for joining, and they took me in as an HR Executive. However, it seems they are finding a way to terminate me, as only one HR is affordable by them, whereas we are two HRs now.
I am concerned because HR doesn't share any data when I was told to go and work there. After this, I approached my reporting manager about the situation; he advised me to meet the owner today.